Tektronix 222 User manual

TEK OPERATORS
MANUAL
070-7100-00
PRODUCT GROUP 40
222
HAN DH ELD
DIGITAL STORAGE
OSCILLOSCOPE
OPERATORS
First Printing DEC 1988
Revised APR 1990
Please Check for
CHANGE INFORMATION
at the Rear of This Manual
COMMTTEO TO EXCELI.ENCE

Copyright © 1988, 1990 Tektronix, Inc. All rights reserved. Contents of this
publicationmaynotbereproducedinanyform withoutthe writtenpermission
of Tektronix, Inc.
Products of Tektronix, Inc. and its subsidiaries are covered by U.S. and
foreign patents and/or pending patents.
~
TEKTRONIX, TEK, and ~ are registered trademarks of Tektronix, Inc.
Printed in U.S.A. Specification and price change privileges are reserved.
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Certificate of the Manufacturer/Importer
we hereby certify that the 222 DIGIT AL STORAGE
OSCILLOSCOPE AND ALL INSTALLED OPTIONS
complies with the RF Interference Suppression requirements of
Amtsbl.-Vfg 1046/1984.
. d h t
the equipment Is being
The German Postal Service was not1fle t a
marketed.
The German Postal Service has the right to re-test the series and to
verify that it complies.
TEKTRONIX
Bescheinigung des Herstellers/lmporteurs
222 DIGITAL STORAGE Hlermit wlrd bescheinigt, dal3 der/dle/das__;:==--:::..:..:::.:..;...;__ ____ _
OSCILLOSCOPE AND ALL INSTALLED OPTIONS
In Ubereinstimmung mit den Bestlmmungen der Amtsblatt-VerfugLlng
1046/1984 funkentstort 1st.
Der Deutschen Bundespost wurde das lnverkehrbrlngen dleses Gerates
angezelgt und die Berechtlgung zur 'uberprufu'ng der Serie auf Einhalten
der Bestimmungen eingeraumt.
TEKTRONIX

NOTICE to the user/operator:
The German Postal Service requires that Systems assembled by the
operator/user of this Instrument must also comply with Postal
Requlatlon,
Vfg. 1046/1984, Par. 2, Sect. 1.
HINWEIS fLlr den Benutzer/Betrelber:
Die vom Betrelber zusammengestellte Anlage, lnnerhalb darer dies
Gerat eingesetzt wlrd, mu13 ebenfalls den Voraussetzungen nach Par. 2,
Ziff. 1 der Vfg. 1046/1984 genugen.
NOTICE to the user/operator:
The German Postal Service requires that this equipment, when used In a
test setup, may only be operated If the requirements of Postal
Regulation,
Vfg. 104611984, Par. 2, Sect. 1.7.1 are compiled with.
HINWEIS fLlr den Benutzer/Betrelber:
Dales Ger'at dart In Me/3aufbauten nur betrieben warden, wenn die
Voraussetzungen des Par. 2,
Ziff. 1. &.1 der Vfg. 1046/1984
eingehalten werden.
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TABLE OF CONTENTS
Page
LIST OF ILLUSTRATIONS ............................... v
LIST OF TABLES ...................................... vi
OPERATORS SAFETY SUMMARY ....................... vii
Section 1 YOUR NEW OSCILLOSCOPE
1.1 FEATURES .............................. 1-1
1.2 SPECIFICATION SUMMARY
................ 1-2
1.3 STANDARD ACCESSORIES ................ 1-4
1.4 OPTIONAL ACCESSORIES . . . . . . . . . . . . . . . . . 1-4
Section 2 GETIING STARTED
2. 1 SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.2 BATTERY-CHARGER ADAPTER
............. 2-1
2.3 EXTERNAL SUPPLY VOLTAGE
.............. 2-1
2.4 BATTERY OPERATION
.................... 2-2
2.5 FIRST TIME BATTERY OPERATION .......... 2-3
2.6 START-UP .............................. 2-4
2.7 AUTO TIMEOUT .......................... 2-4
2.8 VIEWING A SIGNAL QUICKLY .............. 2-4
Section 3 WHAT THE CONTROLS DO
3.1 CONTROL REFERENCE TABLES ............ 3-1
3.2
ON-SCREEN READOUT LOCATIONS ........ 3-6
3.3 EXPANDED CONTROLS INFORMATION ...... 3-8
3.4 CRT DISPLAY, MENU BUTTONS,
AND POWER ............................ 3-8
3.5 VERTICAL CONTROLS ................... 3-10
3.6 HORIZONTAL CONTROLS ................ 3-12
3.7 TRIGGER CONTROLS .................... 3-14
3.8 TOP PANEL BUTTONS ................... 3-16
3.9 REAR PANEL CONTROLS AND
CONNECTORS ......................... 3-19
REV JUN 1989

Page
Section 4 HOW IT WORKS
4.1 TURN ON . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
4.2 AUTO
SETUP ....................... : : : : : 4-1
4.3 MENU SELECTION ....................... 4-2
4.4 STORE OR NONSTORE DISPLAY
MODE SELECTION
....................... 4-3
4.5 CLEARING MENU AND SAVED WAVEFORM
DISPLAYS ............................... 4-3
4.6 CHANNEL SELECTION .................... 4-3
4.7 VERTICAL INPUT COUPLING ............... 4-4
4.8 VOLTS/DIV SCALING ...................... 4...:5
4.9 VERTICAL POSITIONING .................. 4-5
4.10 VARIABLE VOLTS/DIV CONTROL ............ 4-6
4.11 CH1 AND CH2 INVERTED DISPLAY .......... 4-6
4.12 SEC/DIV SCALING ........................ 4-7
4.13 HORIZONTAL POSITIONING . . . . . . . . . . . . . . . 4-8
4.14 X10 MAGNIFICATION ..................... 4-8
4.15 TRIGGER LEVEL SETTING ................. 4-9
4.16 TRIGGER SLOPE SELECTION .............. 4-9
4.17 TRIGGER MODE SETTING . . . . . . . . . . . . . . . . 4-10
4.18 TRIGGER SOURCE SELECTION ............ 4-11
4.19 SAVING WAVEFORMS
.................... 4-12
4.20 RECALLING SAVED WAVEFORMS .......... 4-13
4.21 SAVING FRONT-PANEL SETUPS ........... 4-14
4.22 RECALLING FRONT-PANEL SETUPS ....... 4-16
4.23 CLEARING SAVED FRONT-PANEL SETUPS .. 4-17
4.24 SETTING TRIGGER POSITION ............. 4-18
4.25 ACQUISITION MODE SELECTION .......... 4-20
4.26 X-Y OR Y-T DISPLAY MODE SELECTION .... 4-21
4.27 READOUT ON OR OFF ................... 4-21
4.28 AUTO TIMEOUT ......................... 4-2a
4.29 SETTING BAUD RATE .................... 4-24
4.30 ACTIVATING THE LOCAL MODEM .......... 4-25
4.31 DISPLAY XY ROTATION ALIGNMENT ........ 4-26
4.32 SELF CALIBRATION ...................... 4-28
4.33 FIRMWARE VERSION IDENTIFICATION ...... 4-31
ii
REV APR 1990
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Section 5 MAKING MEASUREMENTS
5.1 SIGNAL TRACING WITH AUTO SETUP ....... 5-1
5.2 GRATICULE MEASUREMENTS . . . . . . . . . . . . . . 5-1
5.3 FLOATING MEASUREMENTS . . . . . . . . . . . . . . .
5-6
5.4 DIFFERENTIAL MEASUREMENTS . . . . . . . . . . . 5-6
5.5 SINGLE SWEEP OPERATION ............... 5-8
Section 6 MORE ON HOW IT WORKS
6.1 AUTO SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.2 PROBES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6-3
6.3 STORE AND NONSTORE DISPLAY MODES ... 6-5
6.4 VERTICAL INPUT COUPLING . . . . . . . . . . . . . . . 6-5
6.5 DEFAULT ACQUISITION MODES . . . . . . . . . . . . 6-6
6.6 TRIGGER MODES ....................... 6-10
6.7 TRIGGER SOURCE ...................... 6-12
6.8 TRIGGER POSITION . . . . . . . . . . . . . . . . . . . . . 6-12
6.9 TRIGGER LEVEL/AUTO LVL: PUSH ......... 6-12
6.10 ACQUISITION MODES ................... 6-13
6.11 TIPS ON BATTERY CARE . . . . . . . . . . . . . . . . . 6-14
6.12 ALTERNATE METHOD FOR BATTERY
CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6.13 BATTERY REPLACEMENT ................. 6-15
6.14 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
6.15 REPACKAGING FOR SHIPMENT . . . . . . . . . . . 6-17
Section 7 OPTIONS AND ACCESSORIES
7.1 INTRODUCTION ......................... 7-1
7.2 STANDARD ACCESSORIES
................ 7-1
7.3 OPTIONAL ACCESSORIES
................. 7-2
7.4 OPTIONS ............................... 7-2
7.5 PARTS SUPPLIED WITH THE 222ACC FIELD
ACCESSORIES KIT ....................... 7-2
Section 8 PERFORMANCE SPECIFICATIONS
8.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
8.2 RECOMMENDED PERFORMANCE
CHECK SCHEDULE ....................... 8-1
REV APR 1990
iii

Page
8.3 DETAILED SPECIFICATIONS ............... 8-1
8.3.1 Vertical Deflection System . . . . . . . . . . . . 8-1
8.3.2 Trigger System
..................... 8-6
8.3.3 Horizontal System ................... 8-6
8.3.4 X-Y Operation ...................... 8-8
8.3.5 RS-232 Interface .................... 8-8
8.3.6 External Power Requirements ......... 8-8
8.3.7 Internal Batteries .................... 8-9
8.4 ENVIRONMENTAL SPECIFICATIONS ........ 8-10
8.5 MECHANICAL SPECIFICATIONS ........... 8-12
Appendix A CHECKING YOUR INSTRUMENT'S
PERFORMANCE
A.1 INTRODUCTION ......................... A-1
A.2
TEST EQUIPMENT REQUIRED .............. A-1
A.3 PERFORMANCE CONDITIONS
............. A-3
A.4 PERFORMANCE CHECK INTERVAL .......... A-3
A.5 PREPARATION ........................... A-4
A.6 INDEX TO PERFORMANCE CHECKS ........ A-5
A.7 DISPLAY CHECKS ........................ A-6
A.8 VERTICAL ............................... A-8
A.9 HORIZONTAL ........................... A-15
A.10 TRIGGER .............................. A-17
INDEX
CHANGE INFORMATION
iv REV
JUN 1989
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Figure
2-1
3-1
3-2
3-3
3-4
3-5
3-6
3-7
3-8
3-9
3-10
4-1
5-1
5-2
5-3
5-4
5-5
6-1
8-1
8-2
A-1
LIST OF ILLUSTRATIONS
Page
External Power Input . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Front-Panel controls . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Top-Panel buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Rear Panel .................................. 3-4
On-screen readout locations . . . . . . . . . . . . . . . . . . . 3-6
CRT display, menu buttons, and power ........... 3-8
Probes and Vertical controls ................... 3-10
Horizontal controls ........................... 3-12
Trigger controls ............................. 3-14
Top-Panel buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
ALIGN x:f test pattern
........................ 4-28
Peak-to-peak voltage measurement ............. 5-2
Voltage with respect to ground .................. 5-3
Time measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Rise Time measurement ....................... 5-5
Common-mode rejection with differential inputs . . . . 5- 7
Probes and probe accessories . . . . . . . . . . . . . . . . . .
6-4
Maximum rated normal-mode voltage versus
frequency derating curve . . . . . . . . . . . . . . . . . . . . . . .
8-4
Maximum rated common-mode voltage versus
frequency derating curve . . . . . . . . . . . . . . . . . . . . . . .
8-5
Trigger jitter check ........................... A-22
REV APR 1990 v

Table
3-1
3-2
3-3
3-4
6-1
6-2
6-3
6-4
A-1
A-2
vi
LIST OF TABLES
Page
Front-Panel Controls Quick Reference ........... 3-1
Top-Panel Controls Quick Reference
............ 3-3
Rear-Panel Controls Quick Reference ............ 3-4
On-Screen Readouts . . . . . . . . . . . . . . . . . . . . . . . . . 3- 7
AUTO SETUP Defaults ......................... 6-2
Default Acquisition Modes ..................... 6-7
Repetitive Store Fill . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
AUTO
LVL Trigger Interval Limits . . . . . . . . . . . . . . . 6-11
Test Equipment Required
...................... A-2
VOLTS/DIV Accuracy Settings .................. A-12
REV JUN 1989
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OPERATORS SAFETY SUMMARY
The safetyinformation in this summaryis for operatingpersonnel. Warnings
and cautions will also be found throughout the manual where they apply .
Terms in this Manual
CAUTION statements identify
conditions or practices that could
result
in damage to the equipment
or other property.
WARNING statements identify
conditions or practices that could
result
in personal injury or loss of
life.
Terms as Marked on
Equipment
CAUTION indicates a personal
injury hazard not immediately
accessible as one reads the
markings, or a hazard to property,
including the equipment itself.
DANGER indicates a personal
injury hazard immediately acces-
sible as one reads the marking.
Symbols in this Manual
Indicates where
applicable cautionary or
other information is to be
found. For maximum input
voltage ratings, see the
Specifications.
Symbols as Marked on
Equipment
~ DANGER-High voltage.
£. ATTENTION-Refer to
manual.
lol DOUBLE INSULATED-No
safety ground required.
Safety Grounding
This instrument is double insulated
and does not use or require a
safety-grounding conductor.
Do Not Operate in an
Explosive Atmosphere
Toavoid explosion, do not operate
this productin an explosiveatmos-
phere unless it has been certified.
Do Not Remove Covers
or Panels
To avoid personal injury, do not
remove the product covers or
panels. Donotoperatetheproduct
without the covers and panels
properly installed.
REV JUN 1989
vii

Section 1-222 DSO Operators
SECTION 1
YOUR NEW OSCILLOSCOPE
1.1 FEATURES
The 222 Digital Storage Oscilloscope is a portable, hand-heldinstru-
ment. It is lightweight and battery operated for remote-site servicing.
Its total portability makes waveform testing easy in locations difficult
or impossible to reach with a standard-sized oscilloscope. The 222
has the following features:
• DC to 10 MHz signal bandwidth
• 1Omegasample per second digitizing rate
• 1 MHz single-shot storage bandwidth
• 10 MHz repetitive storage bandwidth
• Fully isolated dual vertical channels
• 5
mV to 50 V per division vertical deflection sensitivity
• 50 ns to 20 sec per division time base
• On-screen readouts
• Auto setup and auto level triggering
• Minimumtwo houroperating time with afully charged battery
• Three hour recharge time with the instrument off
• Time Out feature when not in active use
• Envelope mode peak detect for glitch capture
• Averaging for smoothing of last four waveform acquisitions
• Continuous envelope mode for monitoring signal changes
• Four front-panel setup save memories
• Four waveform save memories
• Fully configurable front panel and waveform transfers via
the RS-232 communication port
REV APR 1990
1-1

Your New Oscilloscope -222 DSO Operators
1.2 SPECIFICATION SUMMARY
The complete instrument specifications are given in Section 8.
DC Accuracy ±3%
Horizontal Display Accuracy
X1
X10 MAG
Sample Rate Accuracy
Record Length
Vertical Resolution
Useful Bandwidth
Sample Mode
(Single-shot
sampling)
Repetitive Mode
Greater than 0.5 µs/div
0.5 µs/div or Less
Peak Detect Mode
(ENV and
CONT ENV)
Sine Wave Capture
Pulse Width Amplitude
Capture
±2%
±5%
0.01%
512 data points (50 per
division)
8-bits, 25 levels per vertical
division. 10.24 divisions
dynamic range
5
Timebase
Hz
The maximum sampling rate
of 10 MHz is reached at a
SEC/DIV setting of 5 µs/div.
5
Timebase Hz
10 MHz
The analog bandwidth is
limited to 1
OMHz by the
vertical system.
1 MHz
100 ns
1-2
REV APR 1990
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Your New Oscilloscope-222 DSO Operators
Maximum Rated Normal-Mode
Voltage (probe tip to probe
common)
400 V (de + peak ac) to
2 MHz. See Figure 8-1 for
frequency derating curve.
Maximum Rate
Common-Mode
Voltage (probe common to
chassis) 400 V (de + peak ac) to
1 kHz. See Figure
8-2 for
frequency derating curve.
Maximum Rated Potential
Between Channels 800 V (de + peak ac)
Maximum Rated Potential
Between Either Power Pin
and
EXT TRIG COMM
or RS-232 Common
-0.5 to 42 V peak
~
Ifeitherthe EXT TRIG COMMconnector or the RS-232
cable is connected to an external earth ground
or
external power is applied, the oscilloscope chassis
cannot be elevated.
Weight
Without accessories
Dimensions
Length
Height
Width
4.4 lbs
(2 kg)
9.9 in (252 mm)
3.4
in (86.4 mm)
6.25
in (158.8 mm)
REV APR 1990
1-3

Your New Oscilloscope-222 DSO Operators
Battery-Charger Adapter
Battery
Operating Tlme
Charging Time
External
Power Requirements
AC
DC
CRT Graticule Dimensions
18 Vrms
Sealed lead-acid battery
with four cells. 8.8 V
open-
circuit EMF at full charge.
Two hours minimum with a
fully charged battery.
Three hours with the
oscilloscope turned off.
Battery charging takes
place while the
oscilloscope is running
with the battery-charger
adapter supplying power.
16-20
Vac, 16 VA:
47 to 400 Hz.
12-28 Vdc, 15 Watts.
8 X
10 divisions of 0.5 cm
square (diagonal size
approximately 2.5 inches).
1.3 STANDARD ACCESSORIES (refer
to Section 7 for part
numbers)
The instrument is shipped with the following standard accessories:
1 Operators Manual
1 Quick Reference Guide
1 RS-232 Interface Guide
1 Instrument Carrying Pouch
1 Battery-Charger Adapter (wall transformer)
1 Probe Accessories Kit
1 Cabinet Feet Accessory Kit
1-4
REV APR 1990
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Your New Oscllloscope-222 DSO Operators
1.4 OPTIONAL ACCESSORIES (refer to Section 7 for part
numbers)
Spare Battery
Accessory Pouch for Battery or Battery-Charger Adapter
(attaches to the instrument carrying case)
RS-232 Interconnection Cable
BNC-female-to-dual-banana Adapter
RS-232 Demonstration Disk
P2000 1 OOX Attenuator Head
P6122 Probe
Field Accessories Kit
REV APR 1990
1-5

Section 2-222 DSC Operators Manual
SECTION 2
GETTING STARTED
2.1 SAFETY
The Operator's Safety Summary (preceding section 1ofthis manual}
contains safety information about the use of this instrument. Before
connecting the instrument to a power source, read the Operator's
Safety Summary and this section .
2.2 BATTERY-CHARGER ADAPTER
Instruments are shipped with a detachable battery-charger adapter
(wall transformer} that plugs into an ac power-source outlet. The
adapter converts the power-source ac voltage to the
16 to 20 Vac
input voltage needed to operate the instrument (with or without the
battery installed} and charges the oscilloscope's internal battery.
use the battery-chargeradapterto operatethe oscilloscopewhen an
ac line voltage source is available to maintain battery charge for use
when portable operation of the oscilloscope is needed. Use the
appropriate battery-charger adapter for the available power source
voltage
(115 Vac and 230 Vac). The adapter plugs into the instru-
ment's external powerreceptacle as shown
in Figure 2-1. An optional
accessory pouch to carry either the battery-charger adapter
(U.S.
model only} or a spare battery may be ordered (see section 7 for the
part number}. The accessory pouch attaches to the instrument
carrying case.
2.3 EXTERNAL SUPPLY VOLTAGE
The 222 operates on an external supplyvoltage ofeither 12 to 28 Vdc
or 16 to 20 Vac (47 to 400 Hz} from a supplythat provides at least 15
watts or
16 volt-amperes. If the battery charge state is very low, the
current drawn byachargingbatteryfrom the suppliedbattery-charger
adapter (wall transformer) is current limited, and the crt display may
notbe stable.
If this effect is seen, either charge the batteryfor 1hour
before operating the oscilloscope or operate without the battery
installed until it can be charged.
REV APR 1990
2-1

Getting Started-222 DSO Operators Manual
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0 DOUBLE INSULATm.
SAFETY EARTH
NOT REOUIREO.
Figure 2-1. External Power Input.
2.4 BATTERY OPERATION
7100-01A
The internal battery ofthe instrument is a sealed lead-acid type with
four cells. The sealed cells are rechargeable using the battery-
charger adapter supplied with the instrument. Operating time is at
least two hours with a fully charged battery. When the charge level
reaches a pointwhere onlya short amount of operating time remains,
a low-battery indicator (1:::::1) is displayed in the upperright cornerof
the readout. The oscilloscopeturns offautomaticallywhen thebattery
voltage drops below +7.32 V.
2-2
REV APR 1990
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Getting Started-222 DSO Operators Manual
Ifthe charge level ofthe batteryis lessthan about20%, the instrument
will not come on without the external powerprovided
by the battery-
charger adapter. Typical worst-case operatingtimefor an instrument
with fully charged batteries is two hours at normal room temperature
with the TIME OUT feature turned off.
Oneortwo chargedbatteriesmaybecarried in optional pouchesthat
attach to the carrying case for extended use away from
an ac power
source. See Section
6, paragraph 6.13 for the battery removal and
replacement instructions.
An external-power-on indicator( l.c:.I ) appears in the upperright cor-
ner of the readout when external power is on. The battery charges
anytime external poweris supplied, even whilethe instrument is oper-
ating. However, the battery charges faster when the instrument is not
operating. Completelyrecharge the batteryas soon as possible after
each discharge cycle.
Refer to Section 6, paragraph 6.11 for tips on battery care to extend
the operating lifetime
of the battery.
When storing the instrument for periods longer than two
months, fullycharge the batteries; then remove the batteries
andstore them in a
cool place. Storingpartially discharged
batteries for an extended time
or in high temperatures can
deplete the remaining charge, leading to adeep-discharge
condition. Referto Section 6, paragraph 6. 11 forinformation
on restoring a
deep-discharged battery.
2.5 FIRST TIME BATTERY OPERATION
The battery supplied with the oscilloscope is charged at the factory
and shipped disconnected to preserve its shelf life. However, the
state ofbattery charge at the time you receive it will be unknown.
It is
recommendedthat you chargethe batteryforthree hoursbeforeoper-
ating the oscilloscope the first time.
REV APR 1990 2-3

Getting Started-222 DSO Operators Manual
2.6 START-UP
Press the ml button to enable the display and acquisition system.
Pressing the
ml button a second time turns off the oscilloscope
operation but does not disconnect the battery or external power
source. NOTE
As a recommended start-up procedure after the 222 is first
powered up (or afterstoring the 222 for an extended period
of time with the battery removed}, press the l.w.'J button.
2.7 TIMEOUT
There is an automaticTIMEOUTfeature that extends the oscilloscope
operating time on battery operation. With a two-minute period of no
front panel control activity, the oscilloscope turns off. The acquisition
and display can
be turned back on by pressing them button. The
TIME OUT feature does not turn off the oscilloscope when external
power is applied. The feature may also be disabled from turning off
the oscilloscope when operating
on battery power alone. See
Section
4, paragraph 4.28 for operating instructions.
2.8 VIEWING A SIGNAL QUICKLY
Connect one or both of the probe tips to the signals to be viewed.
Press
l.'i"N.1. This givesyou aquick setup ofthe front-panel controlsto
view the signals applied to the probe tip(s). A channel that does not
have a signal connected is turned off (except
CH 1 will not be turned
off ifneitherchannel has a signal). If signals are applied to both chan-
nels, each will be autoranged vertically (setting the VOLTS/DIV and
vertical position for each), but the signal applied to channel 1 will
determine the SEC/DIV and Trigger LEVEL settings. If only channel 2
has a signal applied, that signal is usedto determinethe SEC/DIVset-
ting and Trigger
LEVEL.
2-4
NOTE
AUTO SETUP does not setthe SEC/DIVsettinginto the ROLL
region (0. 1s/div and slower). The practical low frequencyfor
using the AUTO SETUP feature is about 20 Hz.
REV APR 1990

Section 3-222 DSO Operators
SECTION 3
CONTROLS AND INDICATORS
3.1 CONTROL REFERENCE TABLES
(lektronix
Figure 3-1. Front-Panel controls.
Table 3-1
Front-Panel Controls Quick Reference
Figure
Control
Function
Reference
Reference
Name Para.
1 ON Turns the oscilloscope on and off. 3.4,
4.1
2 Menu Selectsthe menu itemswhen one
of
3.4, 4.3
Selects the control menus is displayed.
3 CLEAR Removes menus and/orsaved 3.4, 4.5
waveforms from the display.
4 CH 1 Selects CH 1 to respond to the 3.5, 4.6
Vertical controls. A second press 4.7, 6.4
calls up the CH 1coupling menu.
REV
JUN 1989
3-1

•
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What the Controls Do-222 DSO Operators
·-
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What the Controls Do-222 DSO Operators
•:
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Table 3-1 (cont)
•:
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Figure
Control Function Reference •
'I
Reference Name Para.
5 CH 2 Selects
CH 2 to respond to the 3.5, 4.6, •
::a
Vertical controls. A second press 4.7, 6.4
calls up the CH 2 coupling menu.
•:
'.I
6 POSITION Inner knob vertically positions the 3.5, 4.9
active channel trace.
•·
.i
VOLTS/DIV Outer knob sets VOLTS/DIV of the 3.5, 4.8
active channel. • j
VARIABLE Inner knob is variable VOLTS/DIV 3.5, 4.10
control when held in and rotated. • I
7100-03
7 SLOPE Selects triggering on either rising 3.7, 4.16
( +) or falling (-)slope of the trig-
•:
I Figure
3-2. Top-Panel buttons.
ger signal.
8 MODE Displays the TRIG MODE menu. 3.7, 4.17,
•:
I Table
3-2
6.6
9 SOURCE Displays the TRIGGER SOURCE 3.7, 4.18,
menu. 6.7
10 TRIG'D Indicates oscilloscope is triggered 3.7
when lit.
·~
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Top-Panel Controls Quick Reference
Figure
Control
Function
Reference
Reference Name Para.
1 SAVE Displays the SAVE
WV menus.
3.8, 4.19
11
Trigger Outer knob sets the trigger level 3.7, 4.15
LEVEL threshold when rotated. 6.9 • I
• I
2 RCL Displays the RECALL WVFRM 3.8, 4.20
menu.
3 SETUP Displays the SETUP menu used to 3.8, 4.21,
AUTO Inner button finds the trigger peaks 3.7, 4.15,
LVL:
and sets Trigger LEVEL to midpoint 6.9
PUSH when pressed.
12 AUTO Autoranges volts, time, and trigger 3.6, 4.2,
••
I
• I
STORE, RECALL, or ERASE front- 4.22, 4.23
panel setups.
4 TRIG Displays the TRIG POS menu. 3.8, 4.24,
POS 6.8
SETUP to give the user a quick display of
6.1
the signal at the probe tip.
.:
I 5 ACQ Calls
up the menu for selecting 3.8, 4.25,
acquisition mode. 6.5, 6.10
13 SEC/DIV Outer knob sets the time scaling 3.6, 4.12,
(SEC/DIV). 6.5 • I 6 STORE Switches between STORE and 3.8, 4.4,
NONSTORE display modes. 6.3
POSITION Inner knob positions the waveform 3.6, 4.13
display horizontally.
.:
I 7 DISPL Calls
up the display mode menu. 3.8, 4.11,
4.26, 4.27
X10 MAG Inner knob turns
X10 MAG on and 3.6, 4.14
off when pressed.
.1
I 8 AUX Calls
up the auxiliary functions 3.8,
FUNCT menu. 4.28-4.32
•I
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3-2
•I
REV JUN 1989
3-3

What the Controls Do-222 DSO Operators
,..., CH1 &CH2
'..-' PROBES
IN POUCH
c~NO. I
NORIZ 0 ,r----IX-----~-----(.\1
ALIGI \.!.)
~ <D rt,~~ 0 1.__® _ ____.! ! I~! \ ~ 0
l~s==-~~l=Focu==s==9== ..... ==_==_~"~r.:;i~~-l I _I _f HI _I ®
EXT POWER
11-211VAC
12-28VDC
1SWATTS
11 VA
IHT'~~OlC II
<D ,,.__r,..._wM_~_r"""'_.;.'•n'-----------<~
INPU'I" TRIO COM & [Q]
o~~TED.
7 7100-04A
Figure 3-3. Rear Panel.
Table
3-3
Rear-Panel Controls Quick Reference
Figure Control Function Reference
Reference Name
Para.
, HORIZ Adjusts display for
best horizontal 3.9, 4.30
ROTATION alignment with the graticule.
2 VERT Adjusts display for best vertical 3.9, 4.30
ROTATION alignment with the graticule.
3 FOCUS Adjusts for best display sharp- 3.9
ness.
4 INTEN Adjusts for best viewing 3.9
intensity.
5 TRIG Provides common reference point 3.9
COM for trigger signals.
3-4
REV JUN 1989
• I
•: .:1
What the Controls Do-222 DSO Operators
•:-:•
·~
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Table 3-3 (cont)
• I Figure
Control
Function Reference
Reference Name Para.
•=
I 6 EXT TRIG Provides connection point for 3.9
INPUT applying external trigger signals.
••
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7 COMM Provides RS-232 inpuVoutput 3.9, 4.29
PORT port for digital communication.
·~
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8 EXT Connection Point for the 3.9
POWER battery-charger adapter.
• I INPUT
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REV JUN 1989
3-5

What the Controls Do-222 DSO Operators
3.2 ON-SCREEN READOUT LOCATIONS
On-screen readout locations are shown in Figure 3-4. Menus and
waveform readouts are shown superimposed in the illustration; they
are displayed separately
in actual use. The circled numbers corre-
spond to the figure references in Table 3-4.
3-6
t!l!-
16 17
-l-1-1-!-1
!I >20mV ~1 ! >SOmV ~ l::::l I
TRIG SRC: IVERTj
/1 ~ ../1 /I CH1
_/ L..../ L../ L CH2
~ Il__JUEXT
20µs
Figure 3-4. On-screen readout locations.
REV APA 1990
®
7100-050
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Figure
Reference
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
What the Controls Do-222 DSO Operators
Table 3-4
On-Screen Readouts
Readout Definition
Trigger LEVEL in volts.
Trigger SLOPE indicator (+
or-).
STORE/NONSTORE indicator. Blank for NONSTORE mode.
SEC/DIV readout.
XiO MAG indicator.
Memory number of the latest recalled waveform.
Variable VOLTS/DIV indicator for the last recalled waveform.
VOLTS/DIV readout for the latest recalled waveform. In X-Y
mode, this location displays the VOLTS/DIV readout for the
saved CH 1 waveform.
SLOPE indicator for the latest recalled waveform.
Coupling indicator for the latest recalled waveform.
SEC/DIV readout for the latest recalled waveform. In X-Y
mode, this location displays the VOLTS/DIV readout for the
saved CH 2 waveform.
CH1 invert indicator.
Variable VOLTS/DIV indicator for CH
1.
CH1 VOLTS/DIV readout. The box indicates that CH 1 will
respond to vertical control changes. "OFF" appears here
when
CH 1 is off.
CH 1 input coupling indicator.
Menu label. Each menu has its own name for reference.
Trigger point indicator on the waveform.
CH2 invert indicator.
Variable VOLTS/DIV indicator for CH2.
CH2 VOLTS/DIV readout. "OFF" appears here when
CH 2 is off.
CH2 input coupling indicator.
Low-battery indicator. External power applied indicator appears
here with external power on.
Menu selection choices. A selected choice is boxed
in the
display.
3-7

What the Controls Do-222 DSO Operators
3.3 EXPANDED CONTROLS INFORMATION
The following descriptions provide the user with an expanded
description ofthe operation ofthe oscilloscope's controls. Examples
of
how thecontrols function are given in Section 4. Detailed operating
information for selected front-panel and
top-panel controls is given
in Section
6.
3.4 CRT DISPLAY, MENU BUTTONS, AND POWER
See Figure
3-5 for the location of the following items.
G) CRT -displays the waveforms, menus, and front-panel control
readouts. Parallaxviewing errors are eliminated
by the internally
etched graticule lines on the face of the cathode-ray tube (crt).
The
display is calibrated to the 4 cm by 5 cm (8 divisions by 10
divisions) graticule lines for making waveform measurements.
fl'
Jo'~
/ ,__,EITICAt,.,.. VOLTSIOtV
4
):::::::
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,,, ' ~ ...
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f-(1
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"L...J
(~ ToOEl
... ....
........
(2~\-'12
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-~m
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( "R:!ktronix
222
Digital Storage )
Oscllloscope
'"
'°'"
71CXHJ6A
Figure 3-5. CRT display, menu buttons, and power.
3-8 REV APR 1990
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What the Controls Oo-222 DSO Operators
® m Button-pressed to start the oscilloscope. Pressing it
againturns offthe acquisition and
display activity; batterypower
is always connected.
The oscilloscope has an automatic TIME OUTfeature that con-
seNes battery power. The TIME OUT feature may be turned on
and off from the CON
FIG menu, called up by pressing the mEJ
button (see Section 4, paragraph 4.28).
@ D Buttons (menu select) -used to make menu selections.
When control menus are displayed, pressing the bezel button
next to the control menu choice selects that menu item and
clears the menu from the display. When menus are not dis-
played, pressing the menu button labeled [EI!] resets the
acquisition for all trigger modes.
© letml Button-used to clear menus, stored waveforms, and
STORE mode tracesfrom the display. Menus andwaveformsare
cleared in the following sequence
by consecutivelypressingthe
button:
• First press removes the menus and !DENT information.
• Second press removes saved waveforms and associated
readout data.
• Third press removes the STORE mode trace.
NOTE
For firmware versions below 3.0, the la.ml button has only
the first two functions. A third press does not remove
the
STORE mode traces.
REV APR 1990
3-9

What the Controls Do-222 DSO Operators
3.5 VERTICAL CONTROLS
Refer to Figure 3-6 for the following items.
G) Probes- used to connect signals to the vertical inputs. The two
channels are fully isolated and independently floatable. The
probes are permanently connected to the oscilloscope. When
not in use, they can be stored
in the probe pouch along the right
side ofthe instrument. Asmall channel identifier label is located
on the cable at the probe. See paragraph 6.12 for the use ofthe
various probe tip accessories provide with the oscilloscope.
( "R!ld:ronix
7100-07A
Figure 3-6. Probes and Vertical controls.
3-10
REV APR 1990
..
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What the Controls Do-222 DSO Operators
® SELECT/COUPLING
@) Button -selects CH 1to respond to
the vertical control changes. The selected channel has its
VOLTS/DIV readout boxed in the display.
Asecond press after the channel is selected calls upthe control
menu needed to select the
CH 1 input coupling (DC, AC, GND,
and CH1 OFF). While the menu is displayed, further presses of
the button cyclethrough the coupling choices except
OFF. The
CH1 OFF choice must bemadeusing the menu-select button. If
the channel display is turned off, the word "OFF" appears in
place of the VOLTS/DIV readout for that channel. The effect of
the vertical controls shifts to channel 2 at the time channel 1 is
turned off as indicated
by the VOLTS/DIV readout for channel 2
being boxed.
® SELECT/COUPLING
E:!J Button-same as for the EJ but-
ton, but for channel 2.
© VERTICAL POSITION and Variable VOLTS/DIV
Control
(inner knob)-positions the selected channel vertically. If the
selected channel is "OFF," the effects of any control changes
take effect when the trace is turned back on. The position of
stored waveforms are not affected
by this control. When held in
and turned, it is the Variable VOLTS/DIV control for the selected
channel.
In x:Y display mode, select CH 1 to position the display hori-
zontally; select
CH 2 to position the displayvertically.
® VOLTS/DIV Switch
(outer knob)-controls the VOLTS/DIV
scaling ofthe channel selected by the @) or a button. The
VOLTS/DIV settings for both channels are displayed in the top
line of readout, and the selected channel's VOLTS/DIV readout
is boxed. If the channel trace is turned off, the word "OFF"
appears in place of the VOLTS/DIV readout for that channel.
VOLTS/DIV changes made to an "OFF" channel take effect
when the trace is turned back on.
REV MAR 1989
3-11

What the Controls Do-222 DSO Operators
3.6 HORIZONTAL CONTROLS
Refer to Figure 3-7 for the location of the following items.
r -----------... ~
/' ~ -UITIUL __ _
=::.! Y.t.111: VOL TS/OIY
- HUCT .. ••.:7::'{~)
············· ...... ············ -"L..J !BS\~
l-+-+-+-1-f'-t-+-1~-1 - ~ ~r111111-- -··--
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m ~llllU•ALwSEC/DIV\ ~
-----------""--.. ~ PD5 ·, II 2
[ "ft.......,fOnlX·
222
01g1ta1 storage J ~ • II
. •~ Oscilloscope . ~ ... ,:.
'" , ~ --""')
3
71Q0-08A
Figure 3-7. Horizontal controls.
G) SEC/DIV Switch (outer knob)-sets the horizontaltimescaling
(seconds per division) ofthe acquisition and displayin a 1-2-5
switching sequence.The scalingrange isfrom 50 nanoseconds
perdivisionto 20secondsperdivision
(X1 OMAG decreasesthe
time per division scaling
by a factor of 10). The SEC/DIV switch
setting is displayed in the bottom line
of readout.
There are default acquisition and display modes that are
selected by the SEC/DIVswitch depending onthe TriggerMODE
in effect. Seethe Supplementary Information in Section 6, para-
graph 6.5.
® Horizontal POSITION Control (Inner knob)-used tomovethe
waveformdisplayshorizontally. Thetracesmay
be positionedto
the left orright upto one halfthetrace length. When
X1 OMAG is
on, the control scrolls through the expanded waveform. If the
3-12
REV APR 1990
• iiii
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What the Controls Do-222 DSO Operators
triggerpoint ispositionedoffscreen to the leftor right, theTrigger
Position
"+" indicatorremains at the edge of the displayarea to
help you locate your position in the expanded waveform. In Xi
display mode, the Horizontal Position control does not position
the display. Usethe
CH 1POSITION control to movethe display
horizontally.
® X1 OMAGSwitch (Inner knob)- switchesbetweennormal and
X10 horizontal magnification when pressed.
With
X1 O MAG on, the portion of the display at the center hori-
zontal graticule line is expanded by ten times. When X1 O MAG is
on, aX10 character is seen in the bottom line ofthe readout, and
the SEC/DIV readout reflects the horizontal scaling
of the mag-
nified waveform display.
NOTE
Magnified SCROLL and SCAN-ROLL acquisition displays
are updated only
at the end of each completed acquisition
(see paragraph 6.5).
© ~ Button-autoranges on the signals at the probe tips when
pressed to provide the user with a quick setup for viewing the
waveforms. If a channel has a signal applied, it will beturned on
and vertically autoranged.
See the SupplementaryInformation in Section 6, paragraph 6.1,
tor the events that occur with an AUTO SETUP.
REV APR 1990
3-13

What the Controls Do-222 DSO Operators
3.7 TRIGGER CONTROLS
Refer to Figure 3-8 tor the location of the following items.
G) Trigger LEVEL Control- sets the voltage threshOld that a trig-
ger signal must cross to produce triggering. The Trigger
LEVEL
readout is displayed in the bottom line of readout.
The
LEVEL control has enough range totrigger on any portion of
a signal that is within the dynamicrange ofthe vertical amplifier.
® AUTO LVL: PUSH Button-finds the peak values of the trigger
signal when pressed and sets the Trigger
LEVEL setting at the
midpoint of the trigger signal amplitude.
NOTE
It the Trigger Mode is AUTOLVL and the LEVEL control is
adjusted
or the trigger is lost, the instrument may occas-
sionally tail to reacquire a new level setting.
If this occurs,
press AUTO
LVL: PUSH to restart the process.
lektronix
7100-09A
Figure 3-8. Trigger controls.
3-14
REV APR 1990
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What the Controls Do-222 DSO Operators
@ Trigger
l•u"I Button -switchesbetween triggering on the rising
slopeorthe falling slopeofthe triggersignal. The selected slope
is shown in the bottom line ofthe readout as a"+" or a"-" sym-
bol following the Trigger LEVEL readout.
© Trigger 8
Button -displays the TRIG MODE menu to make
the trigger mode selection. The selected mode is boxed
in the
menu list.
Press the l
11
ml button repeatedly to cycle through the menu
choices while leavingthe menu displayed.
You mayalso select
a new mode by pressing the menu-select button next to the
menu item. The
TRIG MODE menu is removed from the screen
after selecting a mode with one of the menu-select buttons.
Pressing la.ml or calling up another menu also removes the
menu from the display.
® TriggerE3
Button- displaysthe TRIG SAC control menu. The
current trigger source selection will be boxed
in the menu.
Press the E3 button repeatedly to cycle through the menu
choices while leavingthe menu displayed. You mayalso select
a new mode by pressing the menu-select button next to the
menu item. The
TRIG SAC menu is removed from the screenafter
selecting amodewith one ofthe menu-selectbuttons. Pressing
la.ml or calling upanother function also removes the menu from
the display.
® TRIG'D
Indicator- indicatesthat the oscilloscope is being trig-
gered by the selected trigger source signal when lit.
0
[!EE] Button-resets the acquisition and display any time it is
pressed when menus are not displayed. This button is used
specificallyforrearming the SSEQ triggermodeforanewacqui-
sition. Pressing it also resets the
AVG and CONT ENV mode
displays and restarts the acquisition.
REV APR 1990 3-15